The register
The register lists Xcelyst Limited in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Its rating on the register is Worker (A rating).
Companies House lists it as Xcelyst Ltd., number 13554827, incorporated 2021: 5 years of filings behind the name. The registered office is at Level39 Level 39, One Canada Square, Canary Wharf, London, E14 5AB, E14 5AB. Its filed activity puts it in it, software and media.
For a candidate this means one less obstacle: Xcelyst Limited already has the licence most employers would have to apply for. The rest is the ordinary job of getting the interview.